An efficient magnetic nanoadsorbent based on functionalized graphene oxide with gellan gum hydrogel embedded with MnFe layered double hydroxide for adsorption of Indigo carmine from water

Riyadh Hasan Mohammed Ali; Chou-Yi Hsu; Karkaz M Thalij; Raed H Althomali; Sherzod Abdullaev; Sajjad Firas Abdulameer; Ahmed Hussien Alawadi; Ali Alsaalamy; Farah A Dawood; Nahed Mahmood Ahmed

doi:10.1016/j.ijbiomac.2023.127479

An efficient magnetic nanoadsorbent based on functionalized graphene oxide with gellan gum hydrogel embedded with MnFe layered double hydroxide for adsorption of Indigo carmine from water

Int J Biol Macromol. 2023 Dec 31;253(Pt 8):127479. doi: 10.1016/j.ijbiomac.2023.127479. Epub 2023 Oct 20.

Affiliations

¹ Department of Medical Laboratory, Al-Rafidain University College, Baghdad, Iraq.
² Department of Pharmacy, Chia Nan University of Pharmacy and Science, Tainan, Taiwan. Electronic address: chouyihsu@gmail.com.
³ Food Science Department, Tikrit University, Tikrit, Salah Addin Governorte, Iraq. Electronic address: kthalij@gmail.com.
⁴ Department of Chemistry, Prince Sattam Bin Abdulaziz University, College of Arts and Science, Wadi Al-Dawasir 11991, Saudi Arabia.
⁵ Senior Researcher, Engineering School, Central Asian University, Tashkent, Uzbekistan; Senior Researcher, Scientific and Innovation Department, Tashkent State Pedagogical University named after Nizami, Tashkent, Uzbekistan; Ph.D, Department of Organic Chemistry, Andijan Machine-Building Institute, Andijan, Uzbekistan.
⁶ Scientific Research Center, Al-Ayen University, Thi-Qar, Iraq; Civil Engineering Department, College of Engineering, University of Kerbala, Karbala, Iraq.
⁷ College of Technical Engineering, the Islamic University, Najaf, Iraq; College of Technical Engineering, the Islamic University of Al Diwaniyah, Iraq; College of Technical Engineering, the Islamic University of Babylon, Iraq.
⁸ College of Technical Engineering, Imam Ja'afar Al-Sadiq University, Al-Muthanna 66002, Iraq.
⁹ Department of Medical Laboratories Technology, Al-Nisour University College, Baghdad, Iraq.
¹⁰ College of Pharmacy, National University of Science and Technology, Dhi Qar, Iraq.

PMID: 37866574
DOI: 10.1016/j.ijbiomac.2023.127479

Abstract

The primary objective of this investigation was to synthesize a novel antibacterial nanocomposite consisting of natural gellan gum (GG) hydrogel, MnFe LDH, GO, and Fe₃O₄ nanoparticle, which was developed to adsorb Indigo carmine (IC). The GG hydrogel/MnFe LDH/GO/Fe₃O₄ nanocomposite was characterized through different analytical, microscopic, and biological methods. The results of adsorption experiments reveal that 0.004 g of the nanocomposite can remove 98.38 % of IC from a solution with an initial concentration of 100 mg/L, within 1 h at room temperature and under acidic pH conditions. Moreover, the nanocomposite material effectively suppressed the in vitro growth of both E. coli and S. aureus strains, with inhibitory rates of 62.33 % and 53.82 %, respectively. The isotherm data obtained in this investigation were fitted by linear and non-linear forms of Langmuir, Freundlich, and Dubinin-Radushkevich (D-R) isotherms equations. The results of the adsorption kinetics study indicated that the pseudo-second-order model best described the experimental data. The findings of this study suggest that the synthesized nanocomposites hold great potential as effective adsorbents for removing IC and bacteria from aqueous solutions.

Keywords: Gellan gum; Graphene oxide; Indigo carmine; MnFe LDH; Water treatment.

MeSH terms

Adsorption
Escherichia coli
Hydrogels
Hydrogen-Ion Concentration
Hydroxides
Indigo Carmine / chemistry
Kinetics
Magnetic Phenomena
Nanocomposites* / chemistry
Staphylococcus aureus
Water
Water Pollutants, Chemical* / chemistry

Substances

Water
graphene oxide
Indigo Carmine
gellan gum
Hydrogels
hydroxide ion
Hydroxides
Water Pollutants, Chemical